Holographic filter with a wide angular field of view and a narrow spectral bandwidth
US7480084B2 · kind B2 · utility
3Cited by
16References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 5, 2005 |
| Grant date | Jan 20, 2009 |
| Priority date | — |
| Expiry date | Dec 5, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03H1/26
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A holographic optical filter that includes an optical recording medium for storing several multiplexed reflection holograms that are formed by successive interference between two or more collimated object beams with a common collimated reference beam. The object beams are incident to the recording material at a series of angles chosen to provide reflection efficiency over the desired filed of view at the specified wavelength.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.